BuddhaNet Audio: Buddhist Meditation
Download Progressive Relaxation and/or Calming the Body with the Breath. These are mp3 files and are free.
They are simple relaxation scripts that help free your mind of cravings. Each one takes fifteen minutes. Once you learn the relaxation response, you can do it for one or two breaths and get benefit.
You often see it on the baseball field. Also, used by good marksmen. Helpful for mental stress or anxiety if used for 10 or 15 minutes each day.